CN103424749B - A kind of Full-optical-fiber laser radar visibility meter - Google Patents
A kind of Full-optical-fiber laser radar visibility meter Download PDFInfo
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- CN103424749B CN103424749B CN201210159994.2A CN201210159994A CN103424749B CN 103424749 B CN103424749 B CN 103424749B CN 201210159994 A CN201210159994 A CN 201210159994A CN 103424749 B CN103424749 B CN 103424749B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
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Abstract
The invention provides a kind of Full-optical-fiber laser radar visibility meter, the exit of described laser instrument is provided with coupled lens, the focus place of described coupled lens arranges the transmitting terminal of the transmitting-receiving integrated fibre bundle of Y type, the common port of the transmitting-receiving integrated fibre bundle of Y type is positioned at the focus place of telescope primary mirror, the receiving end of the transmitting-receiving integrated fibre bundle of Y type connects described photodetector, and described signals collecting and control module connect described photodetector.Full-optical-fiber laser radar visibility meter provided by the invention, volume is little, lightweight, structure is compacter, and the transmitting-receiving integrated fiber bundle structure of Y type eliminates geometric overlap factor impact, and is beneficial to adjustment and the installation of instrument.
Description
Technical field
The present invention relates to view degree instrument technical field, particularly a kind of Full-optical-fiber laser radar visibility meter.
Background technology
Visibility is reflection air turbidity important parameter, is embodied in the visibility distance of object, namely during observed object thing, can tells the ultimate range of object from background.As the instrument measuring visibility information, visiometer is widely used in the fields such as meteorology, traffic, environmental monitoring.
Current visiometer mostly is transmission-type and forward scattering type, and its volume is comparatively large, and installation process is complicated, can only obtain horizontal direction visibility, and when there is uneven mist, local rain or snowstorm, misleading very easily appears in the reading of instrument.And its to measure sample space little, can only reflect zonule visibility information, the weather phenomenon having a strong impact on traffic safety to a mist etc. cannot be made and accurately, timely reflecting.
Summary of the invention
The invention provides a kind of Full-optical-fiber laser radar visibility meter, volume is little, lightweight, structure is compacter, eliminate geometric overlap factor impact, and be beneficial to adjustment and the installation of instrument.
To achieve these goals, the invention provides following technical scheme:
A kind of Full-optical-fiber laser radar visibility meter, it comprises: comprise laser instrument, telescope, photodetector, signals collecting and control module, power supply and the transmitting-receiving integrated fibre bundle of Y type, wherein:
The exit of described laser instrument is provided with coupled lens, the focus place of described coupled lens arranges the transmitting terminal of the transmitting-receiving integrated fibre bundle of Y type, the common port of the transmitting-receiving integrated fibre bundle of Y type is positioned at the focus place of telescope primary mirror, the receiving end of the transmitting-receiving integrated fibre bundle of Y type connects described photodetector, and described signals collecting and control module connect described photodetector;
The laser beam of laser instrument enters the transmitting-receiving integrated fibre bundle of Y type through described coupled lens, and described laser beam from the transmitting-receiving integrated fibre bundle common port injection of Y type, and injects air by telescope;
Described laser beam again enters the common port of the transmitting-receiving integrated fibre bundle of Y type from the Received Signal that air returns after telescope primary mirror focuses on, and conduct to the transmitting-receiving integrated fibre bundle receiving end of Y type and be coupled into photodetector, light signal is converted to power detection signal by described photodetector;
Described signals collecting and control module comprise single photon counting card, gating device and embedded computer, described single photon counting card is used for carrying out digital counting to described power detection signal, described gating device is according to the startup of the time controling photodetector set, laser instrument and photoelectric counting card and closedown, described embedded computer receives described count results, and completes data handling procedure according to described count results;
Described power supply provides power supply for described laser instrument, photodetector and signals collecting and control module.
Preferably, described laser instrument is diode pumping solid laser, and emission wavelength is 532nm.
Preferably, the common port center of the transmitting-receiving integrated fibre bundle of described Y type is launching fiber fibre core, and peripheral for receiving fiber core, described launching fiber numerical aperture and fibre core core diameter are all less than reception optical fiber.
Preferably, the common port of the transmitting-receiving integrated fibre bundle of described Y type is positioned on telescope optic axis.
Preferably, described photodetector is the single photon photodetector screened based on pulse.
By implementing above technical scheme, there is following technique effect: Full-optical-fiber laser radar visibility meter provided by the invention, volume is little, lightweight, structure is compacter, and the transmitting-receiving integrated fiber bundle structure of Y type eliminates geometric overlap factor impact, and is beneficial to adjustment and the installation of instrument.
Accompanying drawing explanation
The Full-optical-fiber laser radar visibility meter structural representation that Fig. 1 provides for the embodiment of the present invention;
The transmitting-receiving integrated fibre bundle schematic diagram of Y type that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Technical scheme for a better understanding of the present invention, describes embodiment provided by the invention in detail below in conjunction with accompanying drawing.
The embodiment of the present invention provides a kind of Full-optical-fiber laser radar visibility meter, and as depicted in figs. 1 and 2, it comprises: comprise the transmitting-receiving integrated fibre bundle 3 of laser instrument 1, telescope 4, photodetector 5, signals collecting and control module 6, power supply 7 and Y type, wherein:
The exit of described laser instrument 1 is provided with coupled lens 2, the focus place of described coupled lens 2 arranges the transmitting terminal 301 of the transmitting-receiving integrated fibre bundle 3 of Y type, the common port 302 of the transmitting-receiving integrated fibre bundle 3 of Y type is positioned at the focus place of telescope 4 primary mirror, the receiving end 303 of the transmitting-receiving integrated fibre bundle of Y type 3 connects described photodetector 5, and described signals collecting and control module 6 connect described photodetector 5;
The laser beam of laser instrument 1 enters the transmitting-receiving integrated fibre bundle 3 of Y type through described coupled lens 2, and described laser beam penetrates from the common port of the transmitting-receiving integrated fibre bundle 3 of Y type, and injects air by telescope 4;
Described laser beam again enters the common port 302 of the transmitting-receiving integrated fibre bundle 3 of Y type from the Received Signal that air returns after the primary mirror of telescope 4 focuses on, and the receiving end 303 conducting to the transmitting-receiving integrated fibre bundle 3 of Y type is coupled into photodetector 5, light signal is converted to power detection signal by described photodetector 5;
Described signals collecting and control module 6 comprise single photon counting card 601, gating device 602 and embedded computer 603, described single photon counting card 601 is for carrying out digital counting to described power detection signal, described gating device 602 is according to the startup of the time controling photodetector 5 set, laser instrument 1 and monochromatic light electricity numbered card 601 and closedown, described embedded computer 603 receives the count results of described single photon counting card 601, and completes data handling procedure according to described count results;
Described power supply 7 provides power supply for described laser instrument 1, photodetector 5 and signals collecting and control module 6.
In the above-described embodiments, preferably, described laser instrument is diode pumping solid laser, and emission wavelength is 532nm.
In the above-described embodiments, preferably, described Y type transmitting-receiving integrated fibre bundle common port center is launching fiber fibre core, and peripheral for receiving fiber core, described launching fiber numerical aperture and fibre core core diameter are all less than reception optical fiber.
In the above-described embodiments, preferably, the common port of the transmitting-receiving integrated fibre bundle of described Y type is positioned on telescope optic axis.
In the above-described embodiments, preferably, described photodetector is the single photon photodetector screened based on pulse.
As shown in Figure 2, the transmitting-receiving integrated fibre bundle 3 of Y type, comprising: transmitting terminal 301, common port 302, receiving end 303, wherein:
Described transmitting terminal 301, fibre core core diameter is 10 μm, and numerical aperture is 0.11; Described common port 302 center is launching fiber fibre core, and core diameter is 10 μm, and numerical aperture is 0.11, and periphery is the reception fiber core of 6 bundle equal circumference distributions, and core diameter is 40 μm, and numerical aperture is 0.22, and its central shaft overlaps with launching fiber core centre axle; Described receiving end 303 is that 6 bundle equal circumference distributions receive fiber core, and core diameter is 40 μm, and numerical aperture is 0.22.
Measure and start, the outgoing beam of laser instrument 1 enters transmitting terminal 301 fibre core through coupled lens 2, from the launching fiber fibre core outgoing at common port 302 center, air is injected after being focused on by telescope 4 primary mirror, the atmospheric echo including visibility information enters telescope 4 again, light beam is coupled into 6 reception fiber cores of common port 302 periphery, transfer to receiving end 303, and by photodetector 5, light signal is converted to power detection signal, complete whole data handling procedure eventually through signals collecting and control module 6.
The laser visibility meter transmitting-receiving coaxial optical system structure that above-described embodiment provides is simple, and machining accuracy is less demanding, and cost is low; Directly connecting external devices by optical fiber, without the need to carrying out external circuits adjustment, very easily installing; This system efficiently solves the deficiency that non-coaxial laser radar visiometer affects by geometric overlap factor, and avoids launching and receiving light path levelling problems.Its introducing can make the reduction of laser radar visibility meter volume, weight reduces, structure is compacter.
Above a kind of Full-optical-fiber laser radar visibility meter that the embodiment of the present invention provides is described in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (5)
1. a Full-optical-fiber laser radar visibility meter, is characterized in that, comprising: laser instrument, telescope, photodetector, signals collecting and control module, power supply and the transmitting-receiving integrated fibre bundle of Y type, wherein:
The exit of described laser instrument is provided with coupled lens, the focus place of described coupled lens arranges the transmitting terminal of the transmitting-receiving integrated fibre bundle of Y type, the common port of the transmitting-receiving integrated fibre bundle of Y type is positioned at the focus place of telescope primary mirror, the receiving end of the transmitting-receiving integrated fibre bundle of Y type connects described photodetector, and described signals collecting and control module connect described photodetector;
The laser beam of laser instrument enters the transmitting-receiving integrated fibre bundle of Y type through described coupled lens, and described laser beam from the transmitting-receiving integrated fibre bundle common port injection of Y type, and injects air by telescope;
Described laser beam again enters the common port of the transmitting-receiving integrated fibre bundle of Y type from the Received Signal that air returns after telescope primary mirror focuses on, and conduct to the transmitting-receiving integrated fibre bundle receiving end of Y type and be coupled into photodetector, light signal is converted to power detection signal by described photodetector;
Described signals collecting and control module comprise single photon counting card, gating device and embedded computer, described single photon counting card is used for carrying out digital counting to described power detection signal, described gating device is according to the startup of the time controling photodetector set, laser instrument and monochromatic light electricity numbered card and closedown, described embedded computer receives described count results, and completes data handling procedure according to described count results;
Described power supply provides power supply for described laser instrument, photodetector and signals collecting and control module.
2. Full-optical-fiber laser radar visibility meter as claimed in claim 1, it is characterized in that, described laser instrument is diode pumping solid laser, and emission wavelength is 532nm.
3. Full-optical-fiber laser radar visibility meter as claimed in claim 1, it is characterized in that, the common port center of the transmitting-receiving integrated fibre bundle of described Y type is launching fiber fibre core, and peripheral for receiving fiber core, described launching fiber numerical aperture and fibre core core diameter are all less than reception optical fiber.
4. Full-optical-fiber laser radar visibility meter as claimed in claim 1, it is characterized in that, the common port of the transmitting-receiving integrated fibre bundle of described Y type is positioned on telescope optic axis.
5. Full-optical-fiber laser radar visibility meter as claimed in claim 1, is characterized in that, described photodetector is the single photon photodetector screened based on pulse.
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| CN201210159994.2A CN103424749B (en) | 2012-05-22 | 2012-05-22 | A kind of Full-optical-fiber laser radar visibility meter |
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| CN201210159994.2A CN103424749B (en) | 2012-05-22 | 2012-05-22 | A kind of Full-optical-fiber laser radar visibility meter |
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| CN103424749A CN103424749A (en) | 2013-12-04 |
| CN103424749B true CN103424749B (en) | 2015-08-19 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390940B (en) * | 2014-11-26 | 2017-04-26 | 中国科学技术大学先进技术研究院 | Near-infrared laser visibility meter based on upconversion single-photon detector |
| CN104777527B (en) * | 2015-04-20 | 2018-09-28 | 深圳大舜激光技术有限公司 | A kind of visibility caliberating device |
| CN206020656U (en) * | 2016-07-04 | 2017-03-15 | 杭州欧镭激光技术有限公司 | A kind of R-T unit for scanning laser radar |
| CN106404669B (en) * | 2016-11-01 | 2019-10-25 | 北京华泰诺安技术有限公司 | A kind of remote laser spectral detection device and detection method |
| CN106997050B (en) * | 2017-04-20 | 2024-03-01 | 深圳大舜激光技术有限公司 | Scanning type visibility laser radar |
| CN113640222B (en) * | 2021-07-27 | 2024-06-07 | 南京理工大学 | Hand-held double-working-mode laser scattering type aerosol attenuation characteristic measuring instrument |
| CN115327561B (en) * | 2022-08-29 | 2023-04-18 | 中国科学院云南天文台 | Laser ranging active tracking device |
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| CN201110831Y (en) * | 2007-11-21 | 2008-09-03 | 大连理工大学 | Multipurpose high-efficiency fluorescent optical fiber chemical and biological sensor component |
| CN101581786A (en) * | 2009-06-23 | 2009-11-18 | 中国科学院安徽光学精密机械研究所 | Semiconductor laser radar visibility meter |
| CN202661627U (en) * | 2012-05-22 | 2013-01-09 | 杨少辰 | All-optic-fiber laser radar visibility meter |
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| CN1233759A (en) * | 1998-04-24 | 1999-11-03 | 中国科学院上海光学精密机械研究所 | Incoherent laser radar system for detecting atmosphere |
| CN201110831Y (en) * | 2007-11-21 | 2008-09-03 | 大连理工大学 | Multipurpose high-efficiency fluorescent optical fiber chemical and biological sensor component |
| CN101581786A (en) * | 2009-06-23 | 2009-11-18 | 中国科学院安徽光学精密机械研究所 | Semiconductor laser radar visibility meter |
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Owner name: SHENZHEN DARSUN LASER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: YANG SHAOCHEN Effective date: 20150625 |
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Effective date of registration: 20150625 Address after: Beike No. 1077 building, 518000 Guangdong city of Shenzhen province Nanshan District Nanhai Road, Room 308 Applicant after: Shenzhen Darsun Laser Technology Co., Ltd. Address before: Beike No. 1077 building, 518000 Guangdong city of Shenzhen province Nanshan District Nanhai Road, Room 308 Applicant before: Yang Shaochen |
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